Keylite size guide

Keylite Size Guide: How to Order & Find Your Size

To ensure the perfect fit for your Keylite blinds, you need to identify the correct size of your roof window. The most accurate way is by using your Keylite serial number, found on the silver identification card on top of the window sash, or visible under the ventilation handle when the window is open (pictured).

Identify your window type by prefix

The prefix is part of the code: P03, T03 and 03 are different windows and need different blinds.

• Prefix T — timber or white-painted pine windows purchased after 1st April 2019, e.g. T04.
• Prefix P — Polar White PVC windows, e.g. P04.
• No prefix — timber windows bought before 1st April 2019, e.g. 04.

Keylite window code finder

If your label has faded, the Keylite code finder on our size guide lists possible window codes from the visible glass width and height in millimetres, within ±10 mm. Not every possible code is one we make blinds for, so confirm your full code is listed in the size selector on the product page — if it isn't, contact us and we'll help.

Keylite size codes we make blinds for

We make blinds for 78 Keylite size codes. Select your full code, letters included, in the size selector on the product page.

Ready to order?

Got your full code? Choose your fabric from the Keylite range. If you're unsure, send us your serial number using the form on this page or contact us.

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Keylite® is a registered trademark of Keylite Roof Windows Ltd.